Anchor for wells



.1, s. ABERChOMBIE 1,774,911

ANCHOR FOR WELLS Filed July 1,1927

dLW/WM a MENTOR.

1 "5 It is an :bject of theiniiention'toprovide iWhlCii Willbe laterdese'ribed;

and supportthetooloi jpipe.

v jj ncatioinfi edhxuiiigisf 2 023:55 I g 1 a M inirention'relates tee suppoi'ting an tp fiing'a longitudinally 'thi-eoff1e5eing'w chori for use in wells-to engage with the casa; cylindrical passage Gthipugh the coupling. ing ofthe well andsupport an operating tool The squared opening i'slth'elrefoneadapted to i LL within the casing. is ,slidably re'ceive a 'sha ft 7 "the pui pose'vof an anchor whichmay be placed adjaeentthe l The lower end of the housing ki's extended lQWGIj BIlCl of thepipe oitool which is being 'in a1{clly,to form a shouldei8-on its interiorused and adapted to .be expanded at the'de toiengage below thefhea'd 9 of ai block 10.

sired point in the-well so as togrip the casing Saidlolok is shaped to fit within the housing I s i I j, j g and is separated from the lower 'end 'of'the 55 Itis, anobjectto provideiria tool hot this "coupling 1 by packing ri'iigs ll. The lower eh aigaeter a means for releasing-the pipe grip endfof the block 10' is threaded at'12 v fol" cons ping elements upon'the aneho i which maybe iieetion with a mandrel13. The interior of i positively released to expand'the. gripping thef bloek has a "central 'passagef l lcithei eielerfnents at anydesired pointinthe'i'velh: through" withi 'whi'eh the shait'f previously 60 g 'i ,jzThdSViCG is adaptedpartieula 'lyioiruse noted niay rotate; I v V, in supporting a rotating element such asia I {The mandrel l3 is cylindrical atits upper gpipe cutter while thetool isbeing operated endand has bn'oppositesides'theieof recesses and the-invention resides 111413116, P&1'111Q11l31' 15 to receive slips or jaws 16f flThesaid e,

20 const uetion and arrangement of the parts :eesse'sjhax efthe interiorsides formedwith 65' different fromthatshown in Figlll'l the'pifis'2QQthe in V whereby the tool is made simple and 'stro-ng morticesjli of a dovetailed iorm to engage V in construction and ad'aptedto withstandthe with keysioh the slips.; Slots '19 are formed 1 heavy usage to which such'jtool is subjeeted. ,in the sides ofthe mandreladj a'cent the slips, r

I Referring-tothe drawing herewith, Fig. said i'slots having'a vef ftical portion in which, 1 is a central longitudinalfsection thipugh an- 'pi'nsQQ upon the shaft 7 mayslide; the" up; 70 r 1 anchoring Ydeviee embodying my invention. per end's'oi theverti'eal portions eonnec'ting Fig 2 is a side elevation thereof.- 7 3: is with a horizontal extension allowingthe pins a .sideview partly in elevation and partlyin torotate'out-of line} with the vei tiealearinof i section illustrating th j ,Parts'in .a position theislot to prevent longitudinal movement of 7 4 is a transverse Section The pins 20fentend diameti ically thi'ough I of Fig. 3. Fig. 5 i r n ve s oni the .aheadf21 upon the shaft 7. The interionof I 1 ;plane15V "5-.o f Fig. 1. Q Likenumei'alsiofi'efi the mandi elisof sufiicient idth to-reeeive a 40 "a coupling OlfejQiIlt ,1 thfea'dedatlitsiupperh erence are employed t0'ilfl glla j i 1254 3 tension spring 2 2 which bears atits lowei allthejlews r My' fiY C 1S 515?PiQQCl -b6 fend against the head 21 ofthe'shaft and at, ta h t t ower e oi 11 12 01 oel its upper' end against thel'ow'erend (if the; v V-l g h v ower: eni e- 6 3 l h 'd d h 101001110. Thespring thus tends to hold the. engtge h i p r' shaft-downwardly When'the pins-:20 are ror my Improvement therefore eqmpped with tated intosalignnient withithe vertical arms. 5 7' a r t the sl0ts-:19. The s rin will force the .end 2 fonen a ement Wltll"Cheat/001 01 v 1 8; p b

The ewe-1a 525 of the coupling as rea i n sleuth. rw' e P Pe h w 3 1 to t in diameter andthreadedexternally,at 3 for P 1 h m El 7 engagement with'a sleeve 01' housing rhfi The ,f-T fla 1 ZQ thQd- .f 6 ow'enend of theeoupling has a' squai'ed WCQ 0 e gegew h thfl te llwall. of 9 "body member 25, the upper end of which has a reduced tapered shank 26 which is screwed within the lower end of the mandrel 13. Be

low the shank is formed a shoulder 27 limiting the'downward movement of the slips or jaws I I lower "ends; o flsaidi jjaws -16 is held resiliently The collar bearing against the upward towardfsaidljaws by a spring 28 which rests at its lower and upon 'aring'29" screwed upon the lower, threaded-endfihsoi .jthe shaft 25. Below the ring or nut 29 is a 7 guide member 31 which has a threadedsocketp,

engaging with the'lower threaded end of the Below the socket the guide member is 7 formed with a diametrical opening 32,

shaft.

cylindrical in outline and adapted toreceive held resiliently J apart a spiral spring 34 v littedb'etweensaid blocks and tending-to'hold them. outwardly toward ithe wall of the casing. The said blocks have outer slots 35 therein in which are mounted wheels'36', the

peripheries of which are serrated to engage with the casing when the device isintroduced into the well; J Said wheels rotate upon pins V 37'transversely' of slots 35 andqthe'blocks within whi'chisaid wheels are mounted are preventedirom rotation in the openings by 7 means of pins 38*mounted within the wall of the guide member and projecting into slots 39 longitudinallyof said blocks and permitting the sliding of said blocks aswill beQob vious fromFig. 5.

In theoperation of this 2 device the tool which is to be operated will'beconneoted" with the. upper end of the anchoring means as- 7 of the squared'shaf-t 7, saidpin beingrotated out of alignment with the vertical" arm ofthe slot 1'9. The device will? thenfbe introduced into the wen to the desired point where the tool isto be operated. Asthe device is moved 1 downwardly in the wellthe blocks'3'3 will be held outwardly against thefinner'wall'ofthe casing by the spring '34- and the wheels 36 will rotate as the'device is lowered. When theproper point is reached in the well the I drillv stem andthe tool above the anchor will be rotated, thus transmitting a rotating motion to 'the coupling This rotation will not be communicated to: themandre'l; 13: due to. the swivel connection formedpby engagement between the: sleeves and the block. 10.

The rotation of the; coupling l will however --rotate.v tlieshaft 7" through the engagement of the squared, opening; 5 withthe shaft. This the vertical portion of the slot 19 and the spring 22 will then cause the shaft to drop downwardly bringing the pins 20 into the lower ends of the slots 19. This will remove the shaft 7 from the squared opening 5 in the upper collar 1.

It will also force the pins 20 out of engagement with the jaws 16 allowing the spring 28 to force the collar 24 and the jaws 16 upwardly along the mandrel 17 and expanding the jaws into contact with the casing. The wheels 36 will tend to prevent rotation of the guide member and the tool below the swivel so" thatrthe positive rotation of the shaft 7 relative-to -the body of the tool may be accomplished.

Itwil'ltbe obvious that when the jaws are thus expanded the weight of the operated tool abovetlie-'anelioi 'may rest upon the support thus provided and, may be rotated or oper'atedzlin. any manner upon the support. It may be noted here that the squared". shaft 7 has passedout oi" the opening; 5 so that it is not rotated after the slips have been expanded. If it is. thereafter desired-to raise the tool in the well the upward movement of the device will be possible'due. to the fact that the jaws will slidedownwardly onthe mandrel" when the mandrel is elevated and allow this upward movement.

The advantages of my construction lie in the simplicity of the device andthe' positive manner in which it may be operated; itwill nottail to expand: at the proper point in the well and will furnish a substantial and solid support for the tool whichyis to-be' operated thereon. i

The further advantages of the devicesw ill be obvious to those skilled in the art. 7 'What I claimzas new and desire to protect by Letters Patent isz;

1. In a device ofth'e character-described, a mandrel, acoupling, a swivel connection between said mandrelaand' coupling, a downwardly-tapered slideway on said mandrel a jaw slidable onsaid slideway,,means tending to force said jaw upwardly, means toretain said jaw from upward movement, said retainingmeans beingreleasableiby the-rotation oi: said coupling, and means to resist rotation ofsaid mandrel.

, 2.. In a device ofthe character'desoribed a mandrel, a coupling, a swivel connection between said mandrel and: coupling, a downwardly-tapered slideway on said mandrel, a jaw slidable onsaid slideway, means tending to force said jaw upwardly, means to retain said jaw from upward movement, said retaining means being releasablebytherotation of said coupling, and a guide member connected with said mandrel having lateral recesses therein andfv guide wheels slidable outwardly said recesses tobear. againstthe side wall of a well". i

3. In a device of the character described,

a mandrel, downwardlytaperedthereon, toothed jawsgon said slideway, a

coupling having a central channel squared ing through said slot to engage abovesaid jaws, means to move said pin and shaft downwardly when said shaft is rotated through said coupling 'to release said jaws and means to force said jaws upwardly. I

4. In a deviceof. h character des'cribed, a

mandrel, downwardly tapered slideways thereon, toothed jaws on said slideway, a

coupling having a central channel squared at' the lower end thereof, aswivel connection between said mandrel and said coupling, said mandrel having an angular slot therein, a

shaft in said mandrel, .a squaredend thereon luppcr ends' 'ofsaid but" adapted to pass" betweenfsaidjaws when in released position, b

and means to normally said mandrel. 5

'9.{A tool anchor including pipe engaging jaws, armandreltherefor,,'a swivel connecprevent rotation of tion'means between said mandrel and said tool, andadditional means rotatable by said tool to release saidjaws, and a spring acting on said additlonal means to moveltto aw releasing pos'ltlon.

qlntestimony whereofI- hereunto affix my signature this 124th day of June, A. D. 1927 c JAMES'S. ABERCROMBIE. v I V insaid channel, a pin on, said shaft:'projectthrough said slot to engage abovefsaid jaws, a spring tending tov force said shaft downwardly, said shaft being rotatable through said coupling to release saidjaws of said channel, means, to e pand-saidjaws and means to resist rotation of said mandrel.

5. In a device of the character described, a

guide member, means to resist rotation-of and allow said shaft to move downwardly out U i said member, a mandrel gonsaid member, a set of pipevengagmg aws on said mandrel,

meansto hold said jaws releasably col- P 'P iQn, a spring'tending 'to'force said jaws into expanded pipe-engaging position,

and means rotatable relative to saidmandrel to release said jaws Y 6. Ina device of the character described, a i

tubular mandrel means to resist rotation of a said mandrel, a coupling a swivel connectlon between said coupllng and mandrel, aws

, slidable on said mandrel to andfrom pipe 7 1 engaging 7 position,. means 'slidable 1 in said mandrel to hold said jawsfrom'pipe engaging position, means tending to force theisaid v aws into pipe-engagmg position, and means actuated by the relative rotation of said coupling to release said jaw holding means. 7. An anchor for wells including a coupling, a mandrel carried by. but rotatably connec'ted to said coupling, pipe engaging jaws any 1 slidably carried by said mandrehfmeans v longitudinallyslidable in said-mandrel upon rotation of said coupling to release said pipe engaglng jaws, and meansto normally vent rotation of sa d mandrel.

8. An anchor for wells including a coupling, a mandrelcarried by but r'otatably con: nected to said coupling, pipe engaging aws slidably' carried by said; mandrel, means longitudinally slidablein saidmandrelnpon V rotation of said coupling to release said pipe engaging jaws, said means including pins.

pro ectingfrom said mandreltoengage the 

